$releasever not properly handled through rpm-ostree

[butrejp]

I believe this is the same bug from alma detailed here: https://forums.almalinux.org/t/bug-epel-repo-missing-releasever-major-and-releasever-minor-values/5566/4

running rpm-ostree install (or likely any command that interacts with the RPM database) fails because the EPEL 10 repository configuration contains unexpanded variables ($releasever_major).

if you add 10 to /etc/dnf/vars/releasever_major it starts getting 404 errors as it fails to expand $releasever_minor, which the same trick doesn't solve

edit: this happens in both stable and alpha version

[imbev]

rpm-ostree package layering is unsupported on HeliumOS. The corresponding feature for bootc and HeliumOS can be tracked upstream at https://gitlab.com/fedora/bootc/tracker/-/work_items/4

Do you encounter the same issue using dnf install --transient?